Bug 258862

Created attachment 466927 [details] Problem demonstration Changes made from JS to label of a selected <option> in <select> are not rendered unless the focus changes. If the new value is assigned using textContent (and there is no label attribute), the text of the <option> will be updated. If label of a selected <option> is changed, re-selecting it may help, but changing textContent of another <option> works too. If the label was changed in a <button> "click" event listener, it will be rendered only if the focus moves to the <select>. If the change happened as a result of <select> "change" event, the change will be reflected on the list of options, but the <select> will render it as its selected value when the focus moves to another element. The behaviour is present in Safari 16.5.1, Safari TP 173 and Epiphany TP 45.alpha-5-g2486bfbdf+. The problem is similar to bug 255230 (and the demo is based on it), but affects label updates, not innerText or textContent.